Type-writing machine.



, E.E.BARNEY. TYPE WRITING MACHINE.

APPLICATION FILED AUG. 2, 1913 mww. I Patented Mar. 30, 1915.

g s E L WITNEEEIEEL. INVENTUR:

i-HEATTDHNEY outrun TO REMINGTON TYPEWRITER COMPANY, 011 YTJION, NEXV YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

Application filed August 2, 1913.

To all 'UJ/LOWL it may concern:

Be it known that I, EDWIN E. Bnnnnr, citizen of the United States, and resident of Ilion, in the count of Herkimer and State of New York, have invented certain new and useful Improvements in Type-Writing Ma chines, of which. the following is a specifi-- cation.

My invention relates principally to typewriting machines and more particularly to the construction. and mounting of the rotary platens of such machines. Roller platens are also used in machines other than type- Writers and my invention is also applicable or adaptable to such other machines.

ly invention has for its principal object to provide a roller platen of inexpensive construction but thoroughly good and eflicient for its purpose.

Another object of 'vide improved means whereby the platen is detachably mounted in the machine.

To the above and other ends my invention consists in certain features of construction and combinations and arrangements of parts, all of which will be fully set forth herein and particularly pointed out in the claims;

In the accompanying drawings, Figure 1 is a front elevation, partly in section, of the carriage of a ty ')ewriting machine having my invention embodied therein, the platen being shown in longitudinal section. Fig. 2 is a cross section of the platen. Fig.3 is an end. view of said platen and the line space wheel with the platen shaft or axle shown in section. Fig. l is an end view the carriage with the finger wheel removed. Fig. 5 is an end view of one of-thc pieces of wood of which the core platen is made.

In the drawing parts of the typewriting machine not essential to an understanding of my invention are omitte The typewriter carriage shown in the drawing, comprises end brackets 1 connected together by a bar or bars 2 constituting two grooved rails. Anti-friction balls 3 run between said rails 2 and a fixed stationary rail tsuita-bly mounted on the stationary frame work of the machine. The platen has an axle 5 .journaled the end pieces 1 of the Specification of Letters Patent.

the invention is to pro- Patented Mar. 30,

1915. Serial No. 782,611.

carriage, and said platen also has a wooden core consisting of a plurality of pieces 6 fastened together around the axle 5. In the present instance, two of these pieces 6, each formed before eing assembled with a half-round groove or cut-out 7, Fig. 5, extending longitudinally thereof so that when two of said pieces are put together face to face with the shaft 5 between them, said two grooves or cut-outs together form a round hole that fits nicely around the shaft. In order to fasten the core rigidly to the shaft 9. hole is bored transversely through the shaft and a nail 8 is driven through the hole into one of the sections 6 of the core, and the other half of the core is then put in place and the two parts of the core are glued together. In the present instance the nail 8 is shown driven only into one of the halves of the core but when driven into that one i t can be allowed to project beyond the shaft and the other half or section of the core can be forced down over it. It will be seen that the'shaft is thus practically nailed to the core'and that the nails cannot get misplaced because they are placed in between two parts that are glued together. It will be understood that the part 8, which, for convenience, I have called a nail, can be of any suitable character, such as a screw, brad or staple, or merely a piece of wire. Preferably, the two core sectionsare made originally in the form shown in F 5, each consisting in effect of a piece of molding formed with the halfround groove '7 and with the corners rounded off as shown. After the two sections have been fastened together over the, axleand after the glue has dried, the core is then turned down to size on the shaft, after which said core is inserted in a cover 10 consist'ng of rubber or-other suitable material. T cover is preferably of the sort ordinariiy used on typewriter platens.

It will be observed that the nailing is done i from the inside of the core, so to spealnan'd that the nails terminate interiorly of the wooden core. By reason of this fact the breaking away of the wood at-its outer surface is avoided, and moreover the nails do not interfere with the operation just described of turning the core down to 'size after it has been fastened to the shaft.

It will be perceived from the descri tion -above given that the wooden core the platen is firmly fastened to the shaft. Any suitable number of nails 8 'canbe used, two being shown in the present instance. I secure a line space wheel 11 to one end of the platen. On account of the manner in which the core is fastened to'the shaft, this line space wheel does not require to have any hub or to be itself fastened directly to the shaft. Preferably the line space wheel consists of a plain ratchet wheel made out of sheet metal of appropriate thickness and having the ratchet teeth formed around its periphery and having holes made in it for wood screws 12 which screws are screwed into the; end of the wooden core. I have shown an escutcheon'13 consistin simply of a disk of sheet metal perforated for the platen axle and also for nails 14, said escutcheon being nailed to the end of the core opposite that on which the line space wheel is mounted.

In order to mount the platen detachably in the carriage, the axle of said platen lies in an open slot 15 in each of the end pieces 1 of the carriage and on each end pf said axle there is mounted a sleeve 16, the inner end of which is journaled in a counter-bore orcut-out 17 in the outer face of the adjacent end piece 1 and concentric with the bottom of the slot 15. These sleeves preferably consist of the hubs of the finger wheels or twirlers 18. The counter-bore is made of such a diameter asthat the inner end, of the hub takes a bearing therein and as the diameter of the counter-bore and of the hub is greater than the width of the slot 15, this bearing prevents the shaft from rising in the slot. The platen can, however, be readily detached by moving one of the finger-{wheels a short distance away fromits normal position on the shaft. To this end, one of the -15 finger ,wheels is fastened on the;ishaft by means of a set screw 20 which can be readily loosened and the finger wheel be allowed to be moved lengthwise of the shaft out of the counter-bore 17 This also allows the shaft itself to be moved in the opposite direction so as to bring the other hub 16 out. of its counter-bore, after which the platen and shaft can be lifted out of the machine. I prefer to fasten one of the hubs 16 on with a set screw and the other with a pin 21passing through the hub and shaft. This or some equivalent construction is advisable in order to give a definite location to the platen. If both finger wheels were fastened on with set screws and both saidscrews should be loosened at the same time, the next time the platen was put into the machine, it might be put in a little farther to the right or to the left than before, in. which event the line space wheel might not cooperate properly with the line space pawl, detent and so forth. The pin 21 prevents this likelihood of change of position. It will, of course, be understood that any other ordinary device can be substituted for said pin, provided said device has the property mentioned, namely, that of locating the hub lengthwise of the shaft. It will be noted that the hubs 16 and counter-bores 17, per- A minating in the interior of said wooden core.

2. A platen comprising in combination an axle, a core consisting of a plurality of pieces fastened together around said axle and at least one of said pieces nailed to said axle, and a cover on said core.

3. A platen comprising in combination an axle, a core consisting of a plurality of pieces fastened together around said axle and at least one of said pieces nailed. to said axle, a cover on said core, and a line space wheel secured to said core. 7

A platen comprising in combination an axle, a core section to which said axle is nailed, and another core section gluedto the first core section over the nails.

5. A platen comprising in combination an axle, a core section to which said axle is nailed, another core section glued to the first core section over the nails, and metal fixturesfastened to the ends of said core.

6. A platencomprising in combination an axle, a core section to which said axle is nailed, another core section glued to the first core section over the nails, and a .line' space wheel secured solely to said core.

7. A platen comprisingasectional wooden core and a central metallic shaft, said shaft having projecting nails which enter said wooden core and terminate thereof.

8. The combination of a roller platen having an axle, a carriage having parts having open ended slots in which said axle is journaled and said parts also being counterbored, finger wheels having hubs sleeved onto said axle and secured thereto and said hubs entering said counterbores to prevent the axle from rising in said slots, at least one of said hubs being movable o said interiorly axle to permit the detachment of the platen, mer, and State of New York, this 31st day imd Ifieans definitely ito locate the other hub of July A. D. 1913. y en Wise of the ax e so as to insure that the glaten after being removed and replaced EDWIN BARNEY' 5 shall always occupy the same position as be- Witnesses:

fore with relation to said parts. C. E. PHILLIPS, Signed. at Ilion, in the county of Herlzi- GEO. A. SEIB. 

